drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58
  59 static struct usb_device_id btusb_table[] = {
  60         /* Generic Bluetooth USB device */
  61         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  62
  63         /* Apple MacBookPro 7,1 */
  64         { USB_DEVICE(0x05ac, 0x8213) },
  65
  66         /* Apple iMac11,1 */
  67         { USB_DEVICE(0x05ac, 0x8215) },
  68
  69         /* Apple MacBookPro6,2 */
  70         { USB_DEVICE(0x05ac, 0x8218) },
  71
  72         /* Apple MacBookAir3,1, MacBookAir3,2 */
  73         { USB_DEVICE(0x05ac, 0x821b) },
  74
  75         /* Apple MacBookAir4,1 */
  76         { USB_DEVICE(0x05ac, 0x821f) },
  77
  78         /* Apple MacBookPro8,2 */
  79         { USB_DEVICE(0x05ac, 0x821a) },
  80
  81         /* AVM BlueFRITZ! USB v2.0 */
  82         { USB_DEVICE(0x057c, 0x3800) },
  83
  84         /* Bluetooth Ultraport Module from IBM */
  85         { USB_DEVICE(0x04bf, 0x030a) },
  86
  87         /* ALPS Modules with non-standard id */
  88         { USB_DEVICE(0x044e, 0x3001) },
  89         { USB_DEVICE(0x044e, 0x3002) },
  90
  91         /* Ericsson with non-standard id */
  92         { USB_DEVICE(0x0bdb, 0x1002) },
  93
  94         /* Canyon CN-BTU1 with HID interfaces */
  95         { USB_DEVICE(0x0c10, 0x0000) },
  96
  97         { }     /* Terminating entry */
  98 };
  99
 100 MODULE_DEVICE_TABLE(usb, btusb_table);
 101
 102 static struct usb_device_id blacklist_table[] = {
 103         /* CSR BlueCore devices */
 104         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 105
 106         /* Broadcom BCM2033 without firmware */
 107         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 108
 109         /* Atheros 3011 with sflash firmware */
 110         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 111         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 112         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 113
 114         /* Atheros AR9285 Malbec with sflash firmware */
 115         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 116
 117         /* Atheros 3012 with sflash firmware */
 118         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 119
 120         /* Atheros AR5BBU12 with sflash firmware */
 121         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 122
 123         /* Broadcom BCM2035 */
 124         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 125         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 126         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 127
 128         /* Broadcom BCM2045 */
 129         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 130         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 131
 132         /* IBM/Lenovo ThinkPad with Broadcom chip */
 133         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 134         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 135
 136         /* HP laptop with Broadcom chip */
 137         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 138
 139         /* Dell laptop with Broadcom chip */
 140         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 141
 142         /* Dell Wireless 370 and 410 devices */
 143         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 144         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 145
 146         /* Belkin F8T012 and F8T013 devices */
 147         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 148         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 149
 150         /* Asus WL-BTD202 device */
 151         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 152
 153         /* Kensington Bluetooth USB adapter */
 154         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 155
 156         /* RTX Telecom based adapters with buggy SCO support */
 157         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 158         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 159
 160         /* CONWISE Technology based adapters with buggy SCO support */
 161         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 162
 163         /* Digianswer devices */
 164         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 165         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 166
 167         /* CSR BlueCore Bluetooth Sniffer */
 168         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 169
 170         /* Frontline ComProbe Bluetooth Sniffer */
 171         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 172
 173         { }     /* Terminating entry */
 174 };
 175
 176 #define BTUSB_MAX_ISOC_FRAMES   10
 177
 178 #define BTUSB_INTR_RUNNING      0
 179 #define BTUSB_BULK_RUNNING      1
 180 #define BTUSB_ISOC_RUNNING      2
 181 #define BTUSB_SUSPENDING        3
 182 #define BTUSB_DID_ISO_RESUME    4
 183
 184 struct btusb_data {
 185         struct hci_dev       *hdev;
 186         struct usb_device    *udev;
 187         struct usb_interface *intf;
 188         struct usb_interface *isoc;
 189
 190         spinlock_t lock;
 191
 192         unsigned long flags;
 193
 194         struct work_struct work;
 195         struct work_struct waker;
 196
 197         struct usb_anchor tx_anchor;
 198         struct usb_anchor intr_anchor;
 199         struct usb_anchor bulk_anchor;
 200         struct usb_anchor isoc_anchor;
 201         struct usb_anchor deferred;
 202         int tx_in_flight;
 203         spinlock_t txlock;
 204
 205         struct usb_endpoint_descriptor *intr_ep;
 206         struct usb_endpoint_descriptor *bulk_tx_ep;
 207         struct usb_endpoint_descriptor *bulk_rx_ep;
 208         struct usb_endpoint_descriptor *isoc_tx_ep;
 209         struct usb_endpoint_descriptor *isoc_rx_ep;
 210
 211         __u8 cmdreq_type;
 212
 213         unsigned int sco_num;
 214         int isoc_altsetting;
 215         int suspend_count;
 216 };
 217
 218 static int inc_tx(struct btusb_data *data)
 219 {
 220         unsigned long flags;
 221         int rv;
 222
 223         spin_lock_irqsave(&data->txlock, flags);
 224         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 225         if (!rv)
 226                 data->tx_in_flight++;
 227         spin_unlock_irqrestore(&data->txlock, flags);
 228
 229         return rv;
 230 }
 231
 232 static void btusb_intr_complete(struct urb *urb)
 233 {
 234         struct hci_dev *hdev = urb->context;
 235         struct btusb_data *data = hdev->driver_data;
 236         int err;
 237
 238         BT_DBG("%s urb %p status %d count %d", hdev->name,
 239                                         urb, urb->status, urb->actual_length);
 240
 241         if (!test_bit(HCI_RUNNING, &hdev->flags))
 242                 return;
 243
 244         if (urb->status == 0) {
 245                 hdev->stat.byte_rx += urb->actual_length;
 246
 247                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 248                                                 urb->transfer_buffer,
 249                                                 urb->actual_length) < 0) {
 250                         BT_ERR("%s corrupted event packet", hdev->name);
 251                         hdev->stat.err_rx++;
 252                 }
 253         }
 254
 255         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 256                 return;
 257
 258         usb_mark_last_busy(data->udev);
 259         usb_anchor_urb(urb, &data->intr_anchor);
 260
 261         err = usb_submit_urb(urb, GFP_ATOMIC);
 262         if (err < 0) {
 263                 if (err != -EPERM)
 264                         BT_ERR("%s urb %p failed to resubmit (%d)",
 265                                                 hdev->name, urb, -err);
 266                 usb_unanchor_urb(urb);
 267         }
 268 }
 269
 270 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 271 {
 272         struct btusb_data *data = hdev->driver_data;
 273         struct urb *urb;
 274         unsigned char *buf;
 275         unsigned int pipe;
 276         int err, size;
 277
 278         BT_DBG("%s", hdev->name);
 279
 280         if (!data->intr_ep)
 281                 return -ENODEV;
 282
 283         urb = usb_alloc_urb(0, mem_flags);
 284         if (!urb)
 285                 return -ENOMEM;
 286
 287         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 288
 289         buf = kmalloc(size, mem_flags);
 290         if (!buf) {
 291                 usb_free_urb(urb);
 292                 return -ENOMEM;
 293         }
 294
 295         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 296
 297         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 298                                                 btusb_intr_complete, hdev,
 299                                                 data->intr_ep->bInterval);
 300
 301         urb->transfer_flags |= URB_FREE_BUFFER;
 302
 303         usb_anchor_urb(urb, &data->intr_anchor);
 304
 305         err = usb_submit_urb(urb, mem_flags);
 306         if (err < 0) {
 307                 BT_ERR("%s urb %p submission failed (%d)",
 308                                                 hdev->name, urb, -err);
 309                 usb_unanchor_urb(urb);
 310         }
 311
 312         usb_free_urb(urb);
 313
 314         return err;
 315 }
 316
 317 static void btusb_bulk_complete(struct urb *urb)
 318 {
 319         struct hci_dev *hdev = urb->context;
 320         struct btusb_data *data = hdev->driver_data;
 321         int err;
 322
 323         BT_DBG("%s urb %p status %d count %d", hdev->name,
 324                                         urb, urb->status, urb->actual_length);
 325
 326         if (!test_bit(HCI_RUNNING, &hdev->flags))
 327                 return;
 328
 329         if (urb->status == 0) {
 330                 hdev->stat.byte_rx += urb->actual_length;
 331
 332                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 333                                                 urb->transfer_buffer,
 334                                                 urb->actual_length) < 0) {
 335                         BT_ERR("%s corrupted ACL packet", hdev->name);
 336                         hdev->stat.err_rx++;
 337                 }
 338         }
 339
 340         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 341                 return;
 342
 343         usb_anchor_urb(urb, &data->bulk_anchor);
 344         usb_mark_last_busy(data->udev);
 345
 346         err = usb_submit_urb(urb, GFP_ATOMIC);
 347         if (err < 0) {
 348                 if (err != -EPERM)
 349                         BT_ERR("%s urb %p failed to resubmit (%d)",
 350                                                 hdev->name, urb, -err);
 351                 usb_unanchor_urb(urb);
 352         }
 353 }
 354
 355 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 356 {
 357         struct btusb_data *data = hdev->driver_data;
 358         struct urb *urb;
 359         unsigned char *buf;
 360         unsigned int pipe;
 361         int err, size = HCI_MAX_FRAME_SIZE;
 362
 363         BT_DBG("%s", hdev->name);
 364
 365         if (!data->bulk_rx_ep)
 366                 return -ENODEV;
 367
 368         urb = usb_alloc_urb(0, mem_flags);
 369         if (!urb)
 370                 return -ENOMEM;
 371
 372         buf = kmalloc(size, mem_flags);
 373         if (!buf) {
 374                 usb_free_urb(urb);
 375                 return -ENOMEM;
 376         }
 377
 378         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 379
 380         usb_fill_bulk_urb(urb, data->udev, pipe,
 381                                         buf, size, btusb_bulk_complete, hdev);
 382
 383         urb->transfer_flags |= URB_FREE_BUFFER;
 384
 385         usb_mark_last_busy(data->udev);
 386         usb_anchor_urb(urb, &data->bulk_anchor);
 387
 388         err = usb_submit_urb(urb, mem_flags);
 389         if (err < 0) {
 390                 BT_ERR("%s urb %p submission failed (%d)",
 391                                                 hdev->name, urb, -err);
 392                 usb_unanchor_urb(urb);
 393         }
 394
 395         usb_free_urb(urb);
 396
 397         return err;
 398 }
 399
 400 static void btusb_isoc_complete(struct urb *urb)
 401 {
 402         struct hci_dev *hdev = urb->context;
 403         struct btusb_data *data = hdev->driver_data;
 404         int i, err;
 405
 406         BT_DBG("%s urb %p status %d count %d", hdev->name,
 407                                         urb, urb->status, urb->actual_length);
 408
 409         if (!test_bit(HCI_RUNNING, &hdev->flags))
 410                 return;
 411
 412         if (urb->status == 0) {
 413                 for (i = 0; i < urb->number_of_packets; i++) {
 414                         unsigned int offset = urb->iso_frame_desc[i].offset;
 415                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 416
 417                         if (urb->iso_frame_desc[i].status)
 418                                 continue;
 419
 420                         hdev->stat.byte_rx += length;
 421
 422                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 423                                                 urb->transfer_buffer + offset,
 424                                                                 length) < 0) {
 425                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 426                                 hdev->stat.err_rx++;
 427                         }
 428                 }
 429         }
 430
 431         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 432                 return;
 433
 434         usb_anchor_urb(urb, &data->isoc_anchor);
 435
 436         err = usb_submit_urb(urb, GFP_ATOMIC);
 437         if (err < 0) {
 438                 if (err != -EPERM)
 439                         BT_ERR("%s urb %p failed to resubmit (%d)",
 440                                                 hdev->name, urb, -err);
 441                 usb_unanchor_urb(urb);
 442         }
 443 }
 444
 445 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 446 {
 447         int i, offset = 0;
 448
 449         BT_DBG("len %d mtu %d", len, mtu);
 450
 451         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 452                                         i++, offset += mtu, len -= mtu) {
 453                 urb->iso_frame_desc[i].offset = offset;
 454                 urb->iso_frame_desc[i].length = mtu;
 455         }
 456
 457         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 458                 urb->iso_frame_desc[i].offset = offset;
 459                 urb->iso_frame_desc[i].length = len;
 460                 i++;
 461         }
 462
 463         urb->number_of_packets = i;
 464 }
 465
 466 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 467 {
 468         struct btusb_data *data = hdev->driver_data;
 469         struct urb *urb;
 470         unsigned char *buf;
 471         unsigned int pipe;
 472         int err, size;
 473
 474         BT_DBG("%s", hdev->name);
 475
 476         if (!data->isoc_rx_ep)
 477                 return -ENODEV;
 478
 479         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 480         if (!urb)
 481                 return -ENOMEM;
 482
 483         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 484                                                 BTUSB_MAX_ISOC_FRAMES;
 485
 486         buf = kmalloc(size, mem_flags);
 487         if (!buf) {
 488                 usb_free_urb(urb);
 489                 return -ENOMEM;
 490         }
 491
 492         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 493
 494         urb->dev      = data->udev;
 495         urb->pipe     = pipe;
 496         urb->context  = hdev;
 497         urb->complete = btusb_isoc_complete;
 498         urb->interval = data->isoc_rx_ep->bInterval;
 499
 500         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 501         urb->transfer_buffer = buf;
 502         urb->transfer_buffer_length = size;
 503
 504         __fill_isoc_descriptor(urb, size,
 505                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 506
 507         usb_anchor_urb(urb, &data->isoc_anchor);
 508
 509         err = usb_submit_urb(urb, mem_flags);
 510         if (err < 0) {
 511                 BT_ERR("%s urb %p submission failed (%d)",
 512                                                 hdev->name, urb, -err);
 513                 usb_unanchor_urb(urb);
 514         }
 515
 516         usb_free_urb(urb);
 517
 518         return err;
 519 }
 520
 521 static void btusb_tx_complete(struct urb *urb)
 522 {
 523         struct sk_buff *skb = urb->context;
 524         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 525         struct btusb_data *data = hdev->driver_data;
 526
 527         BT_DBG("%s urb %p status %d count %d", hdev->name,
 528                                         urb, urb->status, urb->actual_length);
 529
 530         if (!test_bit(HCI_RUNNING, &hdev->flags))
 531                 goto done;
 532
 533         if (!urb->status)
 534                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 535         else
 536                 hdev->stat.err_tx++;
 537
 538 done:
 539         spin_lock(&data->txlock);
 540         data->tx_in_flight--;
 541         spin_unlock(&data->txlock);
 542
 543         kfree(urb->setup_packet);
 544
 545         kfree_skb(skb);
 546 }
 547
 548 static void btusb_isoc_tx_complete(struct urb *urb)
 549 {
 550         struct sk_buff *skb = urb->context;
 551         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 552
 553         BT_DBG("%s urb %p status %d count %d", hdev->name,
 554                                         urb, urb->status, urb->actual_length);
 555
 556         if (!test_bit(HCI_RUNNING, &hdev->flags))
 557                 goto done;
 558
 559         if (!urb->status)
 560                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 561         else
 562                 hdev->stat.err_tx++;
 563
 564 done:
 565         kfree(urb->setup_packet);
 566
 567         kfree_skb(skb);
 568 }
 569
 570 static int btusb_open(struct hci_dev *hdev)
 571 {
 572         struct btusb_data *data = hdev->driver_data;
 573         int err;
 574
 575         BT_DBG("%s", hdev->name);
 576
 577         err = usb_autopm_get_interface(data->intf);
 578         if (err < 0)
 579                 return err;
 580
 581         data->intf->needs_remote_wakeup = 1;
 582
 583         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 584                 goto done;
 585
 586         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 587                 goto done;
 588
 589         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 590         if (err < 0)
 591                 goto failed;
 592
 593         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 594         if (err < 0) {
 595                 usb_kill_anchored_urbs(&data->intr_anchor);
 596                 goto failed;
 597         }
 598
 599         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 600         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 601
 602 done:
 603         usb_autopm_put_interface(data->intf);
 604         return 0;
 605
 606 failed:
 607         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 608         clear_bit(HCI_RUNNING, &hdev->flags);
 609         usb_autopm_put_interface(data->intf);
 610         return err;
 611 }
 612
 613 static void btusb_stop_traffic(struct btusb_data *data)
 614 {
 615         usb_kill_anchored_urbs(&data->intr_anchor);
 616         usb_kill_anchored_urbs(&data->bulk_anchor);
 617         usb_kill_anchored_urbs(&data->isoc_anchor);
 618 }
 619
 620 static int btusb_close(struct hci_dev *hdev)
 621 {
 622         struct btusb_data *data = hdev->driver_data;
 623         int err;
 624
 625         BT_DBG("%s", hdev->name);
 626
 627         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 628                 return 0;
 629
 630         cancel_work_sync(&data->work);
 631         cancel_work_sync(&data->waker);
 632
 633         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 634         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 635         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 636
 637         btusb_stop_traffic(data);
 638         err = usb_autopm_get_interface(data->intf);
 639         if (err < 0)
 640                 goto failed;
 641
 642         data->intf->needs_remote_wakeup = 0;
 643         usb_autopm_put_interface(data->intf);
 644
 645 failed:
 646         usb_scuttle_anchored_urbs(&data->deferred);
 647         return 0;
 648 }
 649
 650 static int btusb_flush(struct hci_dev *hdev)
 651 {
 652         struct btusb_data *data = hdev->driver_data;
 653
 654         BT_DBG("%s", hdev->name);
 655
 656         usb_kill_anchored_urbs(&data->tx_anchor);
 657
 658         return 0;
 659 }
 660
 661 static int btusb_send_frame(struct sk_buff *skb)
 662 {
 663         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 664         struct btusb_data *data = hdev->driver_data;
 665         struct usb_ctrlrequest *dr;
 666         struct urb *urb;
 667         unsigned int pipe;
 668         int err;
 669
 670         BT_DBG("%s", hdev->name);
 671
 672         if (!test_bit(HCI_RUNNING, &hdev->flags))
 673                 return -EBUSY;
 674
 675         switch (bt_cb(skb)->pkt_type) {
 676         case HCI_COMMAND_PKT:
 677                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 678                 if (!urb)
 679                         return -ENOMEM;
 680
 681                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 682                 if (!dr) {
 683                         usb_free_urb(urb);
 684                         return -ENOMEM;
 685                 }
 686
 687                 dr->bRequestType = data->cmdreq_type;
 688                 dr->bRequest     = 0;
 689                 dr->wIndex       = 0;
 690                 dr->wValue       = 0;
 691                 dr->wLength      = __cpu_to_le16(skb->len);
 692
 693                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 694
 695                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 696                                 skb->data, skb->len, btusb_tx_complete, skb);
 697
 698                 hdev->stat.cmd_tx++;
 699                 break;
 700
 701         case HCI_ACLDATA_PKT:
 702                 if (!data->bulk_tx_ep || (hdev->conn_hash.acl_num < 1 &&
 703                                                 hdev->conn_hash.le_num < 1))
 704                         return -ENODEV;
 705
 706                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 707                 if (!urb)
 708                         return -ENOMEM;
 709
 710                 pipe = usb_sndbulkpipe(data->udev,
 711                                         data->bulk_tx_ep->bEndpointAddress);
 712
 713                 usb_fill_bulk_urb(urb, data->udev, pipe,
 714                                 skb->data, skb->len, btusb_tx_complete, skb);
 715
 716                 hdev->stat.acl_tx++;
 717                 break;
 718
 719         case HCI_SCODATA_PKT:
 720                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 721                         return -ENODEV;
 722
 723                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 724                 if (!urb)
 725                         return -ENOMEM;
 726
 727                 pipe = usb_sndisocpipe(data->udev,
 728                                         data->isoc_tx_ep->bEndpointAddress);
 729
 730                 usb_fill_int_urb(urb, data->udev, pipe,
 731                                 skb->data, skb->len, btusb_isoc_tx_complete,
 732                                 skb, data->isoc_tx_ep->bInterval);
 733
 734                 urb->transfer_flags  = URB_ISO_ASAP;
 735
 736                 __fill_isoc_descriptor(urb, skb->len,
 737                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 738
 739                 hdev->stat.sco_tx++;
 740                 goto skip_waking;
 741
 742         default:
 743                 return -EILSEQ;
 744         }
 745
 746         err = inc_tx(data);
 747         if (err) {
 748                 usb_anchor_urb(urb, &data->deferred);
 749                 schedule_work(&data->waker);
 750                 err = 0;
 751                 goto done;
 752         }
 753
 754 skip_waking:
 755         usb_anchor_urb(urb, &data->tx_anchor);
 756
 757         err = usb_submit_urb(urb, GFP_ATOMIC);
 758         if (err < 0) {
 759                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 760                 kfree(urb->setup_packet);
 761                 usb_unanchor_urb(urb);
 762         } else {
 763                 usb_mark_last_busy(data->udev);
 764         }
 765
 766         usb_free_urb(urb);
 767
 768 done:
 769         return err;
 770 }
 771
 772 static void btusb_destruct(struct hci_dev *hdev)
 773 {
 774         struct btusb_data *data = hdev->driver_data;
 775
 776         BT_DBG("%s", hdev->name);
 777
 778         kfree(data);
 779 }
 780
 781 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 782 {
 783         struct btusb_data *data = hdev->driver_data;
 784
 785         BT_DBG("%s evt %d", hdev->name, evt);
 786
 787         if (hdev->conn_hash.sco_num != data->sco_num) {
 788                 data->sco_num = hdev->conn_hash.sco_num;
 789                 schedule_work(&data->work);
 790         }
 791 }
 792
 793 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 794 {
 795         struct btusb_data *data = hdev->driver_data;
 796         struct usb_interface *intf = data->isoc;
 797         struct usb_endpoint_descriptor *ep_desc;
 798         int i, err;
 799
 800         if (!data->isoc)
 801                 return -ENODEV;
 802
 803         err = usb_set_interface(data->udev, 1, altsetting);
 804         if (err < 0) {
 805                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 806                 return err;
 807         }
 808
 809         data->isoc_altsetting = altsetting;
 810
 811         data->isoc_tx_ep = NULL;
 812         data->isoc_rx_ep = NULL;
 813
 814         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 815                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 816
 817                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 818                         data->isoc_tx_ep = ep_desc;
 819                         continue;
 820                 }
 821
 822                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 823                         data->isoc_rx_ep = ep_desc;
 824                         continue;
 825                 }
 826         }
 827
 828         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 829                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 830                 return -ENODEV;
 831         }
 832
 833         return 0;
 834 }
 835
 836 static void btusb_work(struct work_struct *work)
 837 {
 838         struct btusb_data *data = container_of(work, struct btusb_data, work);
 839         struct hci_dev *hdev = data->hdev;
 840         int err;
 841
 842         if (hdev->conn_hash.sco_num > 0) {
 843                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 844                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 845                         if (err < 0) {
 846                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 847                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 848                                 return;
 849                         }
 850
 851                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 852                 }
 853                 if (data->isoc_altsetting != 2) {
 854                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 855                         usb_kill_anchored_urbs(&data->isoc_anchor);
 856
 857                         if (__set_isoc_interface(hdev, 2) < 0)
 858                                 return;
 859                 }
 860
 861                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 862                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 863                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 864                         else
 865                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 866                 }
 867         } else {
 868                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 869                 usb_kill_anchored_urbs(&data->isoc_anchor);
 870
 871                 __set_isoc_interface(hdev, 0);
 872                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 873                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 874         }
 875 }
 876
 877 static void btusb_waker(struct work_struct *work)
 878 {
 879         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 880         int err;
 881
 882         err = usb_autopm_get_interface(data->intf);
 883         if (err < 0)
 884                 return;
 885
 886         usb_autopm_put_interface(data->intf);
 887 }
 888
 889 static int btusb_probe(struct usb_interface *intf,
 890                                 const struct usb_device_id *id)
 891 {
 892         struct usb_endpoint_descriptor *ep_desc;
 893         struct btusb_data *data;
 894         struct hci_dev *hdev;
 895         int i, err;
 896
 897         BT_DBG("intf %p id %p", intf, id);
 898
 899         /* interface numbers are hardcoded in the spec */
 900         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 901                 return -ENODEV;
 902
 903         if (!id->driver_info) {
 904                 const struct usb_device_id *match;
 905                 match = usb_match_id(intf, blacklist_table);
 906                 if (match)
 907                         id = match;
 908         }
 909
 910         if (id->driver_info == BTUSB_IGNORE)
 911                 return -ENODEV;
 912
 913         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
 914                 return -ENODEV;
 915
 916         if (ignore_csr && id->driver_info & BTUSB_CSR)
 917                 return -ENODEV;
 918
 919         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
 920                 return -ENODEV;
 921
 922         if (id->driver_info & BTUSB_ATH3012) {
 923                 struct usb_device *udev = interface_to_usbdev(intf);
 924
 925                 /* Old firmware would otherwise let ath3k driver load
 926                  * patch and sysconfig files */
 927                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
 928                         return -ENODEV;
 929         }
 930
 931         data = kzalloc(sizeof(*data), GFP_KERNEL);
 932         if (!data)
 933                 return -ENOMEM;
 934
 935         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 936                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 937
 938                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
 939                         data->intr_ep = ep_desc;
 940                         continue;
 941                 }
 942
 943                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
 944                         data->bulk_tx_ep = ep_desc;
 945                         continue;
 946                 }
 947
 948                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
 949                         data->bulk_rx_ep = ep_desc;
 950                         continue;
 951                 }
 952         }
 953
 954         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
 955                 kfree(data);
 956                 return -ENODEV;
 957         }
 958
 959         data->cmdreq_type = USB_TYPE_CLASS;
 960
 961         data->udev = interface_to_usbdev(intf);
 962         data->intf = intf;
 963
 964         spin_lock_init(&data->lock);
 965
 966         INIT_WORK(&data->work, btusb_work);
 967         INIT_WORK(&data->waker, btusb_waker);
 968         spin_lock_init(&data->txlock);
 969
 970         init_usb_anchor(&data->tx_anchor);
 971         init_usb_anchor(&data->intr_anchor);
 972         init_usb_anchor(&data->bulk_anchor);
 973         init_usb_anchor(&data->isoc_anchor);
 974         init_usb_anchor(&data->deferred);
 975
 976         hdev = hci_alloc_dev();
 977         if (!hdev) {
 978                 kfree(data);
 979                 return -ENOMEM;
 980         }
 981
 982         hdev->bus = HCI_USB;
 983         hdev->driver_data = data;
 984
 985         data->hdev = hdev;
 986
 987         SET_HCIDEV_DEV(hdev, &intf->dev);
 988
 989         hdev->open     = btusb_open;
 990         hdev->close    = btusb_close;
 991         hdev->flush    = btusb_flush;
 992         hdev->send     = btusb_send_frame;
 993         hdev->destruct = btusb_destruct;
 994         hdev->notify   = btusb_notify;
 995
 996         hdev->owner = THIS_MODULE;
 997
 998         /* Interface numbers are hardcoded in the specification */
 999         data->isoc = usb_ifnum_to_if(data->udev, 1);
1000
1001         if (!reset)
1002                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1003
1004         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1005                 if (!disable_scofix)
1006                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1007         }
1008
1009         if (id->driver_info & BTUSB_BROKEN_ISOC)
1010                 data->isoc = NULL;
1011
1012         if (id->driver_info & BTUSB_DIGIANSWER) {
1013                 data->cmdreq_type = USB_TYPE_VENDOR;
1014                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1015         }
1016
1017         if (id->driver_info & BTUSB_CSR) {
1018                 struct usb_device *udev = data->udev;
1019
1020                 /* Old firmware would otherwise execute USB reset */
1021                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1022                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1023         }
1024
1025         if (id->driver_info & BTUSB_SNIFFER) {
1026                 struct usb_device *udev = data->udev;
1027
1028                 /* New sniffer firmware has crippled HCI interface */
1029                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1030                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1031
1032                 data->isoc = NULL;
1033         }
1034
1035         if (id->driver_info & BTUSB_BCM92035) {
1036                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1037                 struct sk_buff *skb;
1038
1039                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1040                 if (skb) {
1041                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1042                         skb_queue_tail(&hdev->driver_init, skb);
1043                 }
1044         }
1045
1046         if (data->isoc) {
1047                 err = usb_driver_claim_interface(&btusb_driver,
1048                                                         data->isoc, data);
1049                 if (err < 0) {
1050                         hci_free_dev(hdev);
1051                         kfree(data);
1052                         return err;
1053                 }
1054         }
1055
1056         err = hci_register_dev(hdev);
1057         if (err < 0) {
1058                 hci_free_dev(hdev);
1059                 kfree(data);
1060                 return err;
1061         }
1062
1063         usb_set_intfdata(intf, data);
1064
1065         return 0;
1066 }
1067
1068 static void btusb_disconnect(struct usb_interface *intf)
1069 {
1070         struct btusb_data *data = usb_get_intfdata(intf);
1071         struct hci_dev *hdev;
1072
1073         BT_DBG("intf %p", intf);
1074
1075         if (!data)
1076                 return;
1077
1078         hdev = data->hdev;
1079
1080         __hci_dev_hold(hdev);
1081
1082         usb_set_intfdata(data->intf, NULL);
1083
1084         if (data->isoc)
1085                 usb_set_intfdata(data->isoc, NULL);
1086
1087         hci_unregister_dev(hdev);
1088
1089         if (intf == data->isoc)
1090                 usb_driver_release_interface(&btusb_driver, data->intf);
1091         else if (data->isoc)
1092                 usb_driver_release_interface(&btusb_driver, data->isoc);
1093
1094         __hci_dev_put(hdev);
1095
1096         hci_free_dev(hdev);
1097 }
1098
1099 #ifdef CONFIG_PM
1100 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1101 {
1102         struct btusb_data *data = usb_get_intfdata(intf);
1103
1104         BT_DBG("intf %p", intf);
1105
1106         if (data->suspend_count++)
1107                 return 0;
1108
1109         spin_lock_irq(&data->txlock);
1110         if (!((message.event & PM_EVENT_AUTO) && data->tx_in_flight)) {
1111                 set_bit(BTUSB_SUSPENDING, &data->flags);
1112                 spin_unlock_irq(&data->txlock);
1113         } else {
1114                 spin_unlock_irq(&data->txlock);
1115                 data->suspend_count--;
1116                 return -EBUSY;
1117         }
1118
1119         cancel_work_sync(&data->work);
1120
1121         btusb_stop_traffic(data);
1122         usb_kill_anchored_urbs(&data->tx_anchor);
1123
1124         return 0;
1125 }
1126
1127 static void play_deferred(struct btusb_data *data)
1128 {
1129         struct urb *urb;
1130         int err;
1131
1132         while ((urb = usb_get_from_anchor(&data->deferred))) {
1133                 err = usb_submit_urb(urb, GFP_ATOMIC);
1134                 if (err < 0)
1135                         break;
1136
1137                 data->tx_in_flight++;
1138         }
1139         usb_scuttle_anchored_urbs(&data->deferred);
1140 }
1141
1142 static int btusb_resume(struct usb_interface *intf)
1143 {
1144         struct btusb_data *data = usb_get_intfdata(intf);
1145         struct hci_dev *hdev = data->hdev;
1146         int err = 0;
1147
1148         BT_DBG("intf %p", intf);
1149
1150         if (--data->suspend_count)
1151                 return 0;
1152
1153         if (!test_bit(HCI_RUNNING, &hdev->flags))
1154                 goto done;
1155
1156         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1157                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1158                 if (err < 0) {
1159                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1160                         goto failed;
1161                 }
1162         }
1163
1164         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1165                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1166                 if (err < 0) {
1167                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1168                         goto failed;
1169                 }
1170
1171                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1172         }
1173
1174         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1175                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1176                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1177                 else
1178                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1179         }
1180
1181         spin_lock_irq(&data->txlock);
1182         play_deferred(data);
1183         clear_bit(BTUSB_SUSPENDING, &data->flags);
1184         spin_unlock_irq(&data->txlock);
1185         schedule_work(&data->work);
1186
1187         return 0;
1188
1189 failed:
1190         usb_scuttle_anchored_urbs(&data->deferred);
1191 done:
1192         spin_lock_irq(&data->txlock);
1193         clear_bit(BTUSB_SUSPENDING, &data->flags);
1194         spin_unlock_irq(&data->txlock);
1195
1196         return err;
1197 }
1198 #endif
1199
1200 static struct usb_driver btusb_driver = {
1201         .name           = "btusb",
1202         .probe          = btusb_probe,
1203         .disconnect     = btusb_disconnect,
1204 #ifdef CONFIG_PM
1205         .suspend        = btusb_suspend,
1206         .resume         = btusb_resume,
1207 #endif
1208         .id_table       = btusb_table,
1209         .supports_autosuspend = 1,
1210 };
1211
1212 static int __init btusb_init(void)
1213 {
1214         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1215
1216         return usb_register(&btusb_driver);
1217 }
1218
1219 static void __exit btusb_exit(void)
1220 {
1221         usb_deregister(&btusb_driver);
1222 }
1223
1224 module_init(btusb_init);
1225 module_exit(btusb_exit);
1226
1227 module_param(ignore_dga, bool, 0644);
1228 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1229
1230 module_param(ignore_csr, bool, 0644);
1231 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1232
1233 module_param(ignore_sniffer, bool, 0644);
1234 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1235
1236 module_param(disable_scofix, bool, 0644);
1237 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1238
1239 module_param(force_scofix, bool, 0644);
1240 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1241
1242 module_param(reset, bool, 0644);
1243 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1244
1245 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1246 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1247 MODULE_VERSION(VERSION);
1248 MODULE_LICENSE("GPL");